The issue in vaccine ethics is not whether there are good results, but whether the action itself is morally lawful according to Scripture. The Bible does not justify disobedience for good outcomes. God’s law is eternal and fixed.
It doesn’t matter how much vaccines are believed to be beneficial. Vaccination, being a poison that endangers one’s health and life and violates the Sixth Commandment, stands condemned by Scripture (Romans 3:8); it is doing evil that good may come.